VPN, Another person you might try to contact is Andre Jennings, aka Dre_J. He is a cartridge/tonearm set up guy of the highest caliber. I just sent him my MINT protractor to help him align a PC-1 Supreme on a V-12 and SME 30/12 for someone. He may have extensive experience with some of these arms. If JV has reviewed any of them for TAS, Andre has done the set up. He has also written about set up procedures in TAS. You could do an online search.
I agree with Jfrech, system matching and preference may play the most important role in deciding between these arm/cartridge combinations. They are all top tier arms. IMO, the LT is most interesting because of the novel pivot/tracking mechanism, but I have not heard it. I don't know how much less tracking distortion there is compared to a longer 12" arm, but it is probably audible. On the other hand, other designs may or may not deal with vibrations and energy drainage better. Some people have biases toward uni pivot vs gimbal designs. The Kuzma is also a rather novel design. The SME and Graham are the latest evolutions, and the best iterations, of very successful long term designs.
All of the arms are from well established designers. Other factors to consider are ease and quality of service and reliability. Finally, ease of adjustability may be important. The Kuzma and Graham have nice offset VTA towers for easy SRA adjustments.